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authorJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:55:15 -0400
committerJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:55:15 -0400
commit253e67c8b3a72b3a4757fdbc5845297628db0a4a (patch)
treeadf53b66087aa30dfbf8bf391a1dadb044c3bf4d /static/netbsd/man3/BN_security_bits.3
parenta9157ce950dfe2fc30795d43b9d79b9d1bffc48b (diff)
docs: Added All NetBSD Manuals
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+.\" $NetBSD: BN_security_bits.3,v 1.5 2026/04/08 17:06:41 christos Exp $
+.\"
+.\" -*- mode: troff; coding: utf-8 -*-
+.\" Automatically generated by Pod::Man v6.0.2 (Pod::Simple 3.45)
+.\"
+.\" Standard preamble:
+.\" ========================================================================
+.de Sp \" Vertical space (when we can't use .PP)
+.if t .sp .5v
+.if n .sp
+..
+.de Vb \" Begin verbatim text
+.ft CW
+.nf
+.ne \\$1
+..
+.de Ve \" End verbatim text
+.ft R
+.fi
+..
+.\" \*(C` and \*(C' are quotes in nroff, nothing in troff, for use with C<>.
+.ie n \{\
+. ds C` ""
+. ds C' ""
+'br\}
+.el\{\
+. ds C`
+. ds C'
+'br\}
+.\"
+.\" Escape single quotes in literal strings from groff's Unicode transform.
+.ie \n(.g .ds Aq \(aq
+.el .ds Aq '
+.\"
+.\" If the F register is >0, we'll generate index entries on stderr for
+.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
+.\" entries marked with X<> in POD. Of course, you'll have to process the
+.\" output yourself in some meaningful fashion.
+.\"
+.\" Avoid warning from groff about undefined register 'F'.
+.de IX
+..
+.nr rF 0
+.if \n(.g .if rF .nr rF 1
+.if (\n(rF:(\n(.g==0)) \{\
+. if \nF \{\
+. de IX
+. tm Index:\\$1\t\\n%\t"\\$2"
+..
+. if !\nF==2 \{\
+. nr % 0
+. nr F 2
+. \}
+. \}
+.\}
+.rr rF
+.\"
+.\" Required to disable full justification in groff 1.23.0.
+.if n .ds AD l
+.\" ========================================================================
+.\"
+.IX Title "BN_security_bits 3"
+.TH BN_security_bits 3 2026-04-07 3.5.6 OpenSSL
+.\" For nroff, turn off justification. Always turn off hyphenation; it makes
+.\" way too many mistakes in technical documents.
+.if n .ad l
+.nh
+.SH NAME
+BN_security_bits \- returns bits of security based on given numbers
+.SH SYNOPSIS
+.IX Header "SYNOPSIS"
+.Vb 1
+\& #include <openssl/bn.h>
+\&
+\& int BN_security_bits(int L, int N);
+.Ve
+.SH DESCRIPTION
+.IX Header "DESCRIPTION"
+\&\fBBN_security_bits()\fR returns the number of bits of security provided by a
+specific algorithm and a particular key size. The bits of security is
+defined in NIST SP800\-57. Currently, \fBBN_security_bits()\fR support two types
+of asymmetric algorithms: the FFC (Finite Field Cryptography) and IFC
+(Integer Factorization Cryptography). For FFC, e.g., DSA and DH, both
+parameters \fBL\fR and \fBN\fR are used to decide the bits of security, where
+\&\fBL\fR is the size of the public key and \fBN\fR is the size of the private
+key. For IFC, e.g., RSA, only \fBL\fR is used and it\*(Aqs commonly considered
+to be the key size (modulus).
+.SH "RETURN VALUES"
+.IX Header "RETURN VALUES"
+Number of security bits.
+.SH NOTES
+.IX Header "NOTES"
+ECC (Elliptic Curve Cryptography) is not covered by the \fBBN_security_bits()\fR
+function. The symmetric algorithms are not covered neither.
+.SH "SEE ALSO"
+.IX Header "SEE ALSO"
+\&\fBDH_security_bits\fR\|(3), \fBDSA_security_bits\fR\|(3), \fBRSA_security_bits\fR\|(3)
+.SH HISTORY
+.IX Header "HISTORY"
+The \fBBN_security_bits()\fR function was added in OpenSSL 1.1.0.
+.SH COPYRIGHT
+.IX Header "COPYRIGHT"
+Copyright 2017\-2019 The OpenSSL Project Authors. All Rights Reserved.
+.PP
+Licensed under the Apache License 2.0 (the "License"). You may not use
+this file except in compliance with the License. You can obtain a copy
+in the file LICENSE in the source distribution or at
+<https://www.openssl.org/source/license.html>.